The blockbuster sequel to Todd Phillips's 2009 sleeper hit about a group of friends who travel abroad for a highly eventful stag do has already faced litigation from a tattoo artist claiming copyright over a Mike Tyson-inspired example of body art. Now French fashion house Louis Vuitton has engaged lawyers over a scene in which Zach Galifianakis's eccentric Alan wrongly identifies a handbag as one of its own.

A trademark suit against Warner Bros, which was filed yesterday in a New York federal court, suggests the firm has been damaged after Galifianakis's line, "careful, that is a Louis Vuitton", became a catchphrase. According to the complaint, rather than sourcing a real Louis Vuitton, producers apparently utilised a knock-off made by the Diophy group of companies, who Vuitton is also suing to prevent it selling its goods in the US. In short, the company claims trademark dilution, false designation of origin and unfair competition.

Vuitton, which wants a share of profits from the film, says studio Warner Bros has refused to alter the handbag for the DVD release. The latter has so far declined to comment.

Other suits to hit The Hangover Part II include one from tattoo artist S Victor Whitmill, who created the original Maori-inspired tattoo for Mike Tyson that was reproduced in a scene in which Stuart (Ed Helms) wakes up after a night of drunken debauchery to discover he has an identical design on his face. The studio later said it would digitally alter the design for the DVD release and agreed to settle with Whitmill for an undisclosed amount.

In October, producers also faced a plagiarism suit from screenwriter Michael Alan Rubin, who said The Hangover Part II was based on his idea for a comedy in which the main character travels from America to Asia to wed his girlfriend. It was later dismissed. The studio also settled with a stuntman who claimed he suffered brain trauma during a stunt gone wrong.

While it failed to pick up the positive critical response handed to its predecessor, The Hangover Part II was a sizable box office hit, taking $581m across the globe. A third film is already in the works.